package com.heima.wemedia.service.impl;

import com.alibaba.fastjson.JSONArray;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.heima.apis.article.IArticleClient;
import com.heima.common.aliyun.GreenImageScan;
import com.heima.common.aliyun.GreenTextScan;
import com.heima.common.tess4j.Tess4jClient;
import com.heima.file.service.FileStorageService;
import com.heima.model.article.dtos.ArticleDto;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.wemedia.pojos.WmChannel;
import com.heima.model.wemedia.pojos.WmNews;
import com.heima.model.wemedia.pojos.WmSensitive;
import com.heima.model.wemedia.pojos.WmUser;
import com.heima.utils.common.SensitiveWordUtil;
import com.heima.wemedia.mapper.WmChannelMapper;
import com.heima.wemedia.mapper.WmNewsMapper;
import com.heima.wemedia.mapper.WmSensitiveMapper;
import com.heima.wemedia.mapper.WmUserMapper;
import com.heima.wemedia.service.WmNewsAutoScanService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.util.*;
import java.util.stream.Collectors;

@Service
@Slf4j
@Transactional
public class WmNewsAutoScanServiceImpl implements WmNewsAutoScanService {
    @Autowired
    private WmNewsMapper wmNewsMapper;

    //自媒体文章审核
    @Override
    @Async //标明当前方法是一个异步方法  todo
    public void autoScanWmNews(Integer id) {
//1.查询自媒体文章
        WmNews wmNews = wmNewsMapper.selectById(id);  //获取自媒体中的文章
//        检查参数
        if (wmNews == null) {
//            return ResponseResult.errorResult();
            throw new RuntimeException("WmNewsAutoScanServiceImpl-文章不存在");//TODO 为什么使用这种 不再使用上面那种方法
        }
        if (wmNews.getStatus().equals(WmNews.Status.SUBMIT.getCode())) {
//从内容中提取文本内容和图片
            Map<String, Object> textAndImages = handleTextAndImages(wmNews);
            //自管理的敏感词过滤
            boolean isSensitive = handleSensitiveScan((String) textAndImages.get("content"), wmNews);
            if (!isSensitive) return;

//        2.审核文章内容
            boolean isTextScan = handleTextScan((String) textAndImages.get("content"), wmNews);
            if (!isTextScan) return;
//        3.审核图片
            boolean isImageScan = handleImageScan((List<String>) textAndImages.get("images"), wmNews);
            if (!isImageScan) return;  //todo
/*//        4.审核成功，保存APP端的相关文章
            ResponseResult responseResult = saveAppArticle(wmNews);*/
            //4.审核成功，保存app端的相关的文章数据
            ResponseResult responseResult = saveAppArticle(wmNews);
            if (!responseResult.getCode().equals(200)) {
                throw new RuntimeException("WmNewsAutoScanServiceImpl-文章审核，保存app端相关文章 数据失败");
            }
//回填article_id
            wmNews.setArticleId((Long) responseResult.getData());
            updateWmNews(wmNews, (short) 9, "审核成功");

        }
    }

    @Autowired
    private WmSensitiveMapper wmSensitiveMapper;

    /**
     * 自管理的敏感词审核
     *
     * @param content
     * @param wmNews
     * @return
     */
    private boolean handleSensitiveScan(String content, WmNews wmNews) {
        boolean flag = true;
//获取所有的敏感词
        List<WmSensitive> wmSensitives = wmSensitiveMapper.selectList(Wrappers.
                <WmSensitive>lambdaQuery().select(WmSensitive::getSensitives));
        List<String> sensitiveList =
                wmSensitives.stream().map(WmSensitive::getSensitives).collect(Collectors.toList());
//初始化敏感词库
        SensitiveWordUtil.initMap(sensitiveList);
//查看文章中是否包含敏感词
        Map<String, Integer> map = SensitiveWordUtil.matchWords(content);
        if (map.size() > 0) {
            updateWmNews(wmNews, (short) 2, "当前文章中存在违规内容" + map);
            flag = false;
        }
        return flag;
    }


    @Autowired
    private IArticleClient articleClient;
    @Autowired
    private WmChannelMapper wmChannelMapper;
    @Autowired
    private WmUserMapper wmUserMapper;

    //保存APP端相关文章
    private ResponseResult saveAppArticle(WmNews wmNews) {
        ArticleDto dto = new ArticleDto();
//        属性的拷贝  将所有的东西都拷贝到dto中
        BeanUtils.copyProperties(wmNews, dto);
//        文章的布局
        dto.setLayout(wmNews.getType()); // todo
//        频道
        WmChannel wmChannel = wmChannelMapper.selectById(wmNews.getChannelId());
        if (wmChannel != null) {
            dto.setChannelName(wmChannel.getName());
        }
//作者
        dto.setAuthorId(wmNews.getUserId().longValue());
        WmUser wmUser = wmUserMapper.selectById(wmNews.getUserId());
        if (wmUser != null) {
            dto.setAuthorName(wmUser.getName());
        }
//        设置文章id
        if (wmNews.getArticleId() != null) {   //TODO  为什么这需要判断是否为空上面不需要判断  是因为上面传过来额内容已经确定存在了吗
            dto.setId(wmNews.getArticleId());
        }
        dto.setCreatedTime(new Date());
        ResponseResult responseResult = articleClient.saveArticle(dto);
        return responseResult;

    }

    @Autowired
    private FileStorageService fileStorageService;
    @Autowired
    private GreenImageScan greenImageScan;

    @Autowired
    private Tess4jClient tess4jClient;
    private boolean handleImageScan(List<String> images, WmNews wmNews) {
        boolean flag = true;
        if (images == null && images.size() == 0) {
            return flag;
        }
//        从minio中下载图片
//        图片去重
        images = images.stream().distinct().collect(Collectors.toList());
//           用byte
        ArrayList<byte[]> imageList = new ArrayList<>();
        for (String image : images) {
            byte[] bytes = fileStorageService.downLoadFile(image);  //todo 传的参数
            imageList.add(bytes);
        }
//        审核图片
        try {
            Map map = greenImageScan.imageScan(imageList);
            if (map != null) {
//        审核失败
                if (map.get("suggestion").equals("block")) {
                    flag = false;
                    updateWmNews(wmNews, (short) 2, "当前文章中存在违规内容");
                }
//不确定  需要进行人工审核
                if (map.get("suggestion").equals("review")) {
                    flag = false;
                    updateWmNews(wmNews, (short) 3, "当前文章中存在不确定内容");
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
            flag = false;
        }

        try {
            for (String image : images) {
                byte[] bytes = fileStorageService.downLoadFile(image);
//图片识别文字审核---begin-----
//从byte[]转换为butteredImage
                ByteArrayInputStream in = new ByteArrayInputStream(bytes);
                BufferedImage imageFile = ImageIO.read(in);
//识别图片的文字
                String result = tess4jClient.doOCR(imageFile);
//审核是否包含自管理的敏感词
                boolean isSensitive = handleSensitiveScan(result, wmNews);
                if (!isSensitive) {
                    return isSensitive;
                }
//图片识别文字审核---end-----
                imageList.add(bytes);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        return flag;
    }

    @Autowired
    private GreenTextScan greenTextScan;

    //审查存文本内容  todo 看一下
    private boolean handleTextScan(String content, WmNews wmNews) {
        boolean flag = true;   //todo 看一下视频
        if ((wmNews.getTitle() + "-" + content).length() == 0) {
            return flag;
        }

        try {
            Map map = greenTextScan.greeTextScan((wmNews.getTitle() + "-" + content)); //todo
            if (map != null) {
//             审核失败
                if (map.get("suggestion").equals("block")) { //todo suggestion
                    flag = false;
                    updateWmNews(wmNews, (short) 2, "当前文章中存在违规内容");
                }
//                不确定信息  需要人工审核
                if (map.get("suggestion").equals("review")) { //todo suggestion
                    flag = false;
                    updateWmNews(wmNews, (short) 3, "当前文章中存在不确定内容");
                }
            }
        } catch (Exception e) {
            flag = false;
            e.printStackTrace();
        }
        return flag;
    }

    //修改文章内容
    private void updateWmNews(WmNews wmNews, short status, String reason) {
        wmNews.setStatus(status);
        wmNews.setReason(reason);
        wmNewsMapper.updateById(wmNews);
    }

    //从自媒体的文章中获取文本内容和图片
//    获取文章封面图片
    private Map<String, Object> handleTextAndImages(WmNews wmNews) {
//      存储文本内容
        StringBuilder stringBuilder = new StringBuilder();
        List<String> images = new ArrayList<>();
        //1。从自媒体文章的内容中提取文本和图片
        if (StringUtils.isNotBlank(wmNews.getContent())) {
//            将JSON字符串转化为map类型
            List<Map> maps = JSONArray.parseArray(wmNews.getContent(), Map.class);
            for (Map map : maps) {
                if (map.get("type").equals("text")) {
                    stringBuilder.append(map.get("value"));
                }
                if (map.get("type").equals("image")) {
                    images.add((String) map.get("value"));
                }
            }
        }
//2.提取文章的封面图片
        if (StringUtils.isNotBlank(wmNews.getImages())) {
            String[] split = wmNews.getImages().split(",");
            images.addAll(Arrays.asList(split));
        }
        Map<String, Object> resultMap = new HashMap<>();
        resultMap.put("content", stringBuilder.toString());//todo stringBuilder的类型是怎样的  为什么要toString
        resultMap.put("images", images);
        return resultMap;
    }

}
